iOS自定义日期选择器

2020-07-26 01:29:24

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前言

封装了一个日期选择器，解决两个问题：
1、点击textField，键盘弹出和日期选择器弹出的逻辑处理；
2、同一个界面需要多次用到日期选择器时，判断点击的textField;

一、封装日期选择器类YCDatePickerView

1、新建一个类，基于UIView，取名YCDatePickerView。

2、YCDatePickerView类中.h文件代码如下：

typedef void (^MyBasicBlock)(id result);#import <UIKit/UIKit.h>@interface YCDatePickerView : UIView@property (nonatomic, strong) UIButton *btnConfirm;@property (nonatomic, strong) UIButton *btnCancel;@property (nonatomic, strong) UIDatePicker *datePicker;@property (nonatomic, copy) MyBasicBlock selectBlock;+ (YCDatePickerView *)datePickerViewWithMode:(UIDatePickerMode) datePickerMode bolck:(MyBasicBlock)block;@end

3、YCDatePickerView类中.m文件代码如下：

#define SCREEN_WIDTH   [[UIScreen mainScreen] bounds].size.width#define SCREEN_HEIGHT   [[UIScreen mainScreen] bounds].size.height#define kTopBarViewHeight    40#define kButton_Width      40#define kButton_Height     40#define kDatePicker_Height   256#import "YCDatePickerView.h"@implementation YCDatePickerView- (id)initWithFrame:(CGRect)frame{  self = [super initWithFrame:frame];  if (self) {    UIView *topBarView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.frame.size.width, kTopBarViewHeight)];    topBarView.backgroundColor = [UIColor orangeColor];    [self addSubview:topBarView];    _btnConfirm = [[UIButton alloc] initWithFrame:CGRectMake(self.frame.size.width-kButton_Width-10, 0, kButton_Width, kButton_Height)];    [_btnConfirm addTarget:self action:@selector(btnConfirm:) forControlEvents:UIControlEventTouchUpInside];    [_btnConfirm setTitle:@"确定" forState:UIControlStateNormal];    [topBarView addSubview:_btnConfirm];    _btnCancel = [[UIButton alloc] initWithFrame:CGRectMake(10, 0, kButton_Width, kButton_Height)];    [_btnCancel addTarget:self action:@selector(btnCancel:) forControlEvents:UIControlEventTouchUpInside];    [_btnCancel setTitle:@"取消" forState:UIControlStateNormal];    [topBarView addSubview:_btnCancel];    _datePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, CGRectGetMaxY(topBarView.frame), self.frame.size.width, self.frame.size.height-kTopBarViewHeight)];    _datePicker.backgroundColor = [UIColor whiteColor];    [self addSubview:_datePicker];  }  return self;}- (void)btnConfirm:(id)sender{  if (self.selectBlock) {    self.selectBlock(self.datePicker.date);  }}- (void)btnCancel:(id)sender{  if (self.selectBlock) {    self.selectBlock(nil);  }}+ (YCDatePickerView *)datePickerViewWithMode:(UIDatePickerMode) datePickerMode bolck:(MyBasicBlock)block{  YCDatePickerView *picker = [[YCDatePickerView alloc] initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, kDatePicker_Height)];  picker.datePicker.datePickerMode = datePickerMode;  picker.selectBlock = block;  return picker;}@end

二、YCDatePickerView的使用

1、在ViewController中导入头文件

#import "YCDatePickerView.h"

2、在ViewController.m中添加如下代码

#define SCREEN_WIDTH   [[UIScreen mainScreen] bounds].size.width#define SCREEN_HEIGHT   [[UIScreen mainScreen] bounds].size.height#import "ViewController.h"#import "YCDatePickerView.h"@interface ViewController ()@property (retain, nonatomic) YCDatePickerView *datePicker;@end@implementation ViewController- (void)viewDidLoad {  [super viewDidLoad];  UITextField *begin = [[UITextField alloc] initWithFrame:CGRectMake(10, 70, SCREEN_WIDTH-20, 30)];  begin.placeholder = @"请输入开始时间";  begin.borderStyle = UITextBorderStyleRoundedRect;  [self.view addSubview:begin];  __weak ViewController *weakself = self;  begin.inputView = [YCDatePickerView datePickerViewWithMode:UIDatePickerModeDate                             bolck:^(NSDate *result) {                               if (result) {                                 begin.text = [weakself dateToString:result];                               }                               [begin resignFirstResponder];                             }];  UITextField *end = [[UITextField alloc] initWithFrame:CGRectMake(10, 120, SCREEN_WIDTH-20, 30)];  end.placeholder = @"请输入结束时间";  end.borderStyle = UITextBorderStyleRoundedRect;  [self.view addSubview:end];  end.inputView = [YCDatePickerView datePickerViewWithMode:UIDatePickerModeDate                                   bolck:^(NSDate *result) {                                     if (result) {                                       end.text = [weakself dateToString:result];                                     }                                     [end resignFirstResponder];                                   }];}//日期转为字符串- (NSString *)dateToString:(NSDate *)date{  NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];  [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];  NSString *strDate = [dateFormatter stringFromDate:date];  return strDate;}@end

三、效果图